At the title screen, select either arcade or arrange (append) mode. Then, hold Left and press Start for a hidden set of characters. To unlock a second set, hold Right and press Start. Note: Each mode has its own set of hidden characters.

Secret modes

At the title screen, select either arcade or arrange (append) mode. Press Select or Up at the difficulty selection screen to display the "Secret Mode" screen. Then, enter one of the following codes to unlock the corresponding mode: